Here are our licensing policy and terms for submitting contributions to our code base(From Trac on MacOS Forge)

add-licensing-policy-and-terms_README.rdoc.patch

diff --git a/README.rdoc b/README.rdoc
index 7fe3384..e70d547 100644
--- a/README.rdoc
+++ b/README.rdoc
@@ -74,6 +74,35 @@ http://macruby.org website has pointers). Thanks!
 
 === Contribute
 
+Here are our licensing policy and terms for submitting contributions
+to our code base:
+
+1. If you are sending in modifications to existing MacRuby code, you
+   agree by submitting your modifications that the modifications are
+   licensed under the existing license terms of the files you are modifying
+   (i.e., {Ruby License}[https://github.com/MacRuby/MacRuby/blob/master/COPYING]).
+   Please also add your copyright (name and year) to the relevant files
+   for modifications that include more than 10 lines of code.
+2. If you are submitting new files for inclusion in the MacRuby
+   project hosted here which are written by you (no code copied from
+   another source), you agree by submitting the files that your
+   contributions are licensed under the
+   {Ruby License}[https://github.com/MacRuby/MacRuby/blob/master/COPYING]
+   (i.e., dual-licensed under the Ruby license terms and the GPL v2).
+   Please include your copyright (name and year) and
+   the {Ruby License}[https://github.com/MacRuby/MacRuby/blob/master/COPYING]
+   in your submitted files.
+3. If you are not the author of the modifications, you agree to
+   include the original copyright notices and licensing terms with
+   your submission, to the extent that they exist. If there wasn't a
+   copyright notice or license in the original sources, please make a
+   note of it.
+4. Generally, we can only take in contributions that are licensed
+   under the {Ruby License}[https://github.com/MacRuby/MacRuby/blob/master/COPYING]
+   in order to maintain license compatibility
+   within the project. Contact us if you believe an exception is
+   warranted, prior to submitting the code.
+
 Once you've made your great commits:
 
 1. Fork[http://help.github.com/fork-a-repo] MacRuby